Home / 20,752.91-31,128.60-11,397.31

Finding the Fourth Proportional to 20,752.91, 31,128.60 and 11,397.31

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Solution

The fourth proportional to 20,752.91, 31,128.60 and 11,397.31 is: 17,095.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,752.91 : 31,128.60 = 11,397.31 : x
  2. Step 2: Convert to fraction form
    20,752.91/31,128.60 = 11,397.31/x
  3. Step 3: Cross multiply
    20,752.91x = 31,128.60 × 11,397.31
  4. Step 4: Simplify right side
    20,752.91x = 354,782,304.07
  5. Step 5: Solve for x
    x = 354,782,304.07/20,752.91
  6. Step 6: Final answer
    x = 17,095.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.